20687884

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{1051}}^1$

素因数の和:1118

約数の個数: 48

約数和(自身を含む): 44773120

約数和(自身を除く): 24085236

約数列:

[1, 2, 4, 7, 14, 19, 28, 37, 38, 74, 76, 133, 148, 259, 266, 518, 532, 703, 1036, 1051, 1406, 2102, 2812, 4204, 4921, 7357, 9842, 14714, 19684, 19969, 29428, 38887, 39938, 77774, 79876, 139783, 155548, 272209, 279566, 544418, 559132, 738853, 1088836, 1477706, 2955412, 5171971, 10343942, 20687884]

約数ペア:

[(1, 20687884), (2, 10343942), (4, 5171971), (7, 2955412), (14, 1477706), (19, 1088836), (28, 738853), (37, 559132), (38, 544418), (74, 279566), (76, 272209), (133, 155548), (148, 139783), (259, 79876), (266, 77774), (518, 39938), (532, 38887), (703, 29428), (1036, 19969), (1051, 19684), (1406, 14714), (2102, 9842), (2812, 7357), (4204, 4921)]